carbohydrates
Word family
- carbohydratenounB1
- carbnounB2
- carbohydrate-richadjectiveB2
- carbohydrateadjectiveB2
Synonym discussion
Sense: noun/1
All four terms relate to energy-providing nutrients, but they differ in scope and register. 'Carbs' is an informal shortening of 'carbohydrates' used in everyday conversation, diet talk, and fitness contexts ('I'm cutting back on carbs'). 'Starch' refers specifically to complex carbohydrates found in potatoes, rice, corn, and grains — it excludes simple sugars. 'Sugar' covers sweet-tasting simple carbohydrates like sucrose and fructose, often used in cooking or found in fruit. 'Glucose' is a scientific term for the simplest sugar molecule that cells use directly for energy; it appears in medical or biology contexts. For everyday nutrition needs, 'carbohydrates' or the informal 'carbs' are the best choices. In scientific writing, 'starch', 'sugar', and 'glucose' each pick out a narrower chemical category.
Common collocations
Etymology
The word 'carbohydrate' was coined in the mid-19th century from 'carbon' and 'hydrate' (water), because early chemists observed that these compounds had a chemical formula that appeared to be carbon with water — C·H₂O. The term entered English scientific writing from French 'carbohydrate'. Today, we know carbohydrates are not actually hydrates of carbon, but the name stuck.
First known use
1851
1851, in the meaning defined above